/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.flink.table.sources;

import org.apache.flink.api.java.DataSet;
import org.apache.flink.api.java.ExecutionEnvironment;

/**
 * Defines an external batch table and provides access to its data.
 *
 * @param <T> Type of the {@link DataSet} created by this {@link TableSource}.
 * @deprecated use {@link InputFormatTableSource} instead.
 */
@Deprecated
public interface BatchTableSource<T> extends TableSource<T> {

    /**
     * Returns the data of the table as a {@link DataSet}.
     *
     * <p>NOTE: This method is for internal use only for defining a {@link TableSource}. Do not use
     * it in Table API programs.
     */
    DataSet<T> getDataSet(ExecutionEnvironment execEnv);
}
